The NSW EPA had requested that BVSC undertake an Environmental Audit of the Eden STP. ASpect was commissioned to undertake this audit (see the Eden STP Environmental Audit project). This resulted in BVSC and the EPA agreeing to an Environmental Undertaking (EU). The EU enforced many of the recommendations of the Environmental Audit. ASpect was then engaged to verify that the items in the EU had been implemented. This involved a review of the installation of additional facilities, an improved automated control system, more comprehensive operational documentation and improved alarming and response. The outcome was significantly improved performance, capacity and robustness.